Noisy, difficult and angsty hip-hop has officially become ''a thing''. Clipping, the second record from Los Angeles hip-hop trio Clppng, swims in the wake of recently-split noise-rappers, Death Grips, a group that also took hip-hop into atypically abrasive terrain. Static bursts and machinery groans make up some of this record’s ingenious beats, evoking the harsh sounds of early Public Enemy. But the beats’ cutting edge is dulled by the clinically spat and clichéd rhymes of rapper Daveed Diggs. While Diggs matches Andre 3000 in crisp, lyrical complexity and says something of merit when he strays from the wordplay of ghetto street thuggery, as on Dream, this release is still at its best when the rapper just lets the beat ride.